Highlighted rows differ between the two models.
| Specification | Tamron SP AF 17-50mm f/2.8 XR Di II LD Aspherical (IF) - Monture Canon EF-S | Tokina 12-28mm f/4 AT-X Pro DX - Monture Canon EF-S |
|---|---|---|
| Mount | ||
| Mount | canon-ef-s | canon-ef-s |
| Optics | ||
| Focal (difference) | 17-50 mm | 12-28 mm |
| Aperture (difference) | f/2.8 | f/4.0 |
| Prime | No | No |
| Stabilization | No | No |
Pick Model A if you prioritize a faster f/2.8 aperture for low-light performance and shallower depth of field, or need the 50mm telephoto reach. Model B stays the better choice if you require a wider 12mm starting focal length for landscapes or architecture, and can accept the slower f/4 aperture. Budget is nearly identical, so the decision hinges on focal range and aperture needs.